baber/WOPTO huggingface dataset:
Patent GB-1201742-A (GB)
Title: Separation of isomers of 1,4-dialkyl- and 1 - alkyl - 4 - alkenyl - 1,2 - epoxycyclohexanes
IPC: C07D303/04
Filed: 1969-02-05
Abstract: 1,201,742. Cyclohexane derivatives. R. J. REYNOLDS TOBACCO CO. 5 Feb., 1969 [26 Feb., 1968], No. 6243/69. Heading C2C. Cis and trans isomers of 1,4-dialkyl- or 1- alkyl - 4 - alkenyl - 1,2 - epoxycyclohexanes are separated by treating a mixture thereof with water whereby the cis-epoxide is converted into the trans-1,2-diol whilst the trans-epoxide remains unreacted and thereafter separating the trans-epoxide from the trans diol. The treatment may be effected under acid, alkaline or neutral conditions. The trans-diol may be selectively esterified to give a 2-monoester which on pyrolysis yields a trans-1,4-dialkyl or trans-1- alkyl - 4 - alkenyl - 1 - hydroxy - cyclohex - 2 - ene. The trans-epoxide may be reacted with acetic acid and the 1-hydroxy-2-acetoxy compound formed subsequently pyrolysed.
Patent GB-1339866-A (GB)
Title: Transmission system
IPC: H04L25/49
Filed: 1972-02-10
Abstract: 1339866 Digital transmission; F.S.K. systems PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 10 Feb 1972 [13 Feb 1971] 6262/72 Heading H4P  In a F.S.K. system, for suppression of low frequencies in the spectrum of the modulated signal, the modulator output is conveyed through a direct channel, and a parallel channel having a delay equal to half the period of the highest frequency, the transmission line being selectively coupled to either the direct channel, or to both channels to provide a difference signal which effectively converts the F.S.K. signal into a pseudo-ternary F.S.K. signal. To reduce distortion, along short lines, the direct signal is transmitted, whereas for longer lines, where distortion is normally greater, pseudo-ternary signals are used. In the latter case, at the receiver, a filter is coupled to the line through a variable coupling capacitor. Modulator output El is applied directly to switch contact 2 and through polarity inverter P and delay L = T/2 where T = period of highest frequency, e.g. 9,600 Hz, to contact 3 of S1. In the position of S1 shown, input E1 is connected through parallel paths to amplifier LP, but in the reverse position output of LP is proportional to the difference between inputs hence giving a pseudo-ternary F.S.K. signal. Limiter diodes D1-D4 clip peak signals to a constant level and the transmitted signal frequency is limited by a coupling capacitor CR; a low-pass filter Tf may be serially connected. In operative condition the transmitter has to present a high impedance to the line TC, hence the FE transistor is cut off after a delay of about 3À5 m/s. to dissipate energy in the line, but is rendered conductive when operating by a signal E3. An arrangement for a receiver, Fig. 3 (not shown) is described in which transitions are detected and the original signal reconstituted.
Patent GB-396650-A (GB)
Title: Improvements in a method and apparatus for making undercut saw teeth or the like
IPC: B23D63/00
Filed: 1933-03-01
Abstract: 396,650. Making saw blades. OLSSON, A. H., 1A, Nya Stadens Torg, Lidk÷ping, Sweden. March 1, 1933, No. 6264. [Classes 83 (ii) and 83 (iii).] Planing and shaping.-Saw blades or the like are formed with undercut teeth by means of a planing-cutter 2 having teeth 3 whose tops lie on a line which is inclined to the tops of a number of blanks 1 arranged side by side in the table of a shaping-machine. After each reciprocation of the cutter in a direction transverse to the blanks, the blanks are moved longitudinally through a distance equal to the pitch of the teeth. Thus each tooth on a blank is produced by a succession of cuts while it is moved intermittently from right to left of the cutter 2. Alternatively the blanks may be transversely reciprocated and the spacing movement imparted to the cutter. The tops of the finished teeth may be trimmed by an additional tool 4 mounted on the cutter 2.
Patent GB-591839-A (GB)
Title: Improvements in abrasive articles and method of making the same
IPC: B24D3/34
Filed: 1945-03-14
Abstract: 591,839. Abrasive articles. MICROMATIC HONE CORPORATION. March 14, 1945, No. 6397. Convention date, March 9, 1944. [Class 60] [Also in Group VIII] A method of forming a homogeneous abrasive article includes the steps of bonding abrasive grains with a material which only partially fills the voids between the grains, leaving the resulting structure porous, and filling the pores with liquid. gelatin which solidifies, and hardening the solidified gelatin thereafter. Abrasive particies 6 are bonded by material 7 to leave pores 8 which are filled by gelatin 9 by immersion in a solution of gelatin under vacuum. The gelatin is solidified by dehydration and hardened by immersion in tannic acid, formaldehyde or chromic acid.
Patent GB-103746-A (GB)
Title: Improvements in Internal Combustion Engines.
Inventor: CROSSLEY KENNETH IRWIN
IPC: F02B25/00
Filed: 1916-05-05
Abstract: 103,746. Crossley, Sir K. I., and Webb, W. le P. May 5, 1916. Drawings to Specification. Cylinders receiving liquid fuel.-The oviform combustion chambers described in Specifications 2974/15 and 2976/15 as applied to four-strokecycle engines are, according to this invention, adapted to two-stroke-cycle engines.
Patent GB-267166-A (GB)
Title: Improvements relating to steam or gas turbines
IPC: F01D1/26
Filed: 1927-03-08
Abstract: 267,166. R÷der, K. March 8, 1926, [Convention date]. Oppositely - running rotor type ; driving and transmission mechanism, special applications of.-In a steam or gas turbine, of the axialflow type with oppositely running rotors, the driving medium is admitted through the bore of an inner rotor, and passes through a median radial passage to escape through the blades on both sides of the passage. The blades on the outer rotor are mounted on two-part liners and the outer rotor is not divided in an axial plane. The inner rotor a carrying blades c has a passage z for the driving fluid, and a second passage p cut axially through the rotor a to conduct the fluid to the blades. The last stage t may be a radial flow-stage. The rotors a, b, revolve the gear-wheels g, h respectively, and in opposite directions. The main driving wheel i is rotated directly by the wheel h and through the gearing k, l, by the wheel g. Fig. 4 shows a modification in which an initial radial-flow stage u is used. Fig. 6 shows an initial axial-flow stage shrouded by a ring v. In the form shown in Fig. 7 the outer rotor b has a second series of blades o alternating with fixed blades p on the casing q. Steam at an intermediate stage may be tapped off at r. The blades of the outer rotor are carried by two-part liners.
Patent GB-1212803-A (GB)
Title: Educational counting post
Inventor: FILACY RUDOLPH
IPC: G09B19/02
Filed: 1969-02-06
Abstract: 1,212,803. Educational appliances. EDUKAID. 6 Feb., 1969, No. 6534/69. Heading G5G. An educational aid to arithmetical operations comprises pegs 8, 9 of different colours which are inserted in holes in a post the front surface of which is marked with consecutive numbers which are aligned with the holes in the post.
Patent GB-1525415-A (GB)
Title: Mos transistor
IPC: H01L29/78
Filed: 1976-02-19
Abstract: 1525415 IGFET RCA CORPORATION 19 Feb 1976 [27 May 1975] 06578/76 Heading H1K In an IGFET formed in a semiconductor island upstanding from a substrate opposite end sections of the island constituting the source and drain regions are separated by a channel region of the opposite conductivity type. The gate electrode, disposed on a layer of insulation extends over the channel region on the upper face and edge surfaces of the island and on the edge and edge-adjacent portions of the island the channel region is provided with lateral extensions to both sides of the gate thereby eliminating undesirable edge effects. In the embodiments the island, etched from a 100 orientated layer of silicon pyrolytically deposited on a 1102 face of a sapphire substrate is covered by a conventionally grown silica layer and the gate consists of polysilicon or vapour deposited aluminium. The portions of the channel provided with the lateral extensions may be located within the periphery of a rectangular island or in portions projecting from it.
Patent GB-881773-A (GB)
Title: Improvements in apparatus and processes for treating thermoplastic textile yarns
Inventor: SCRAGG FREDERICK
IPC: D02J13/00
Filed: 1959-02-26
Abstract: 881,773. Finishing yarns. SCRAGG & SONS Ltd., ERNEST. Feb. 16, 1960 [Feb. 26, 1959], No. 6656/59. Class 120(3) [Also in Group XI] Apparatus for heat treating a running yarn of thermoplastic material, e.g. during stretching or shrinking or to set twist therein during crimping, comprises a cylinder rotated through bearings on a fixed shaft by an external geared drive and heated around its periphery (on which the yarn runs) by a stationary heating element mounted near the cylinder. In a drum-type heater shown in Figs. 1 and 2, a fixed shaft 1 carries two discs 4 of heat insulating material which support an electrical heating element 5 the supply, via leads 6, to which may be regulated to maintain the heater at a predetermined temperature. A drum 10 consisting of pieces 7 and 8 of heat insulating material and a yarn channel member 9 of heat conducting material, e.g. copper, brass or mild steel, is rotated on bearings 13 through gear teeth 12 on a boss 11. A cover 25 of heat insulating material embraces drum 10 and a spacer 22 around which the yarn entering and leaving via a slot 21 is wound and led sequentially in channels of member 9. Cover 10 is in two halves pivoted on a pin 14 and normally held together by a spring 16 and located by lugs 17, 18, which engage a fixed pin 20. In a crimping process, Fig. 3, yarn withdrawn from a bobbin 30 through a tensioner 31 by rollers 32, 33, and spacer 34, passes through a heater 35 (constructed as shown in Figs. 1 and 2) and a false-twist tube 36 and is forwarded by a device 37 to be wound on a take-up package 38. The peripheral speeds of drum 35 and device 37 are slightly less than that of roller 32 but slightly greater than that of wind-up roller 40. Specifications 464,981 and 536,177 are referred to.
Patent GB-1004317-A (GB)
Title: Improvements in or relating to electric lanterns for street lighting
Inventor: SIMMONDS RICHARD WALTER FRANK
IPC: F21S8/08
Filed: 1961-02-23
Abstract: 1,004,317. Electric lighting fittings. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Jan. 10, 1962 [Feb. 23, 1961], No. 6688/61. Heading F4R. A wholly or partly translucent envelope in which is enclosed a tubular electric lamp is carried by a rod extending from a support head and is clamped to the head by endwise pressure of releasable clamping means associated with both ends of the rod and externally accessible at the end of the rod adjacent the support head. In the form shown, the lantern consists of a sleeve 10 of translucent material which may be fluted internally, closed at one end by a cap and having an internal channel flanged to rest on a rod 9 extending from the support casing 1. The ends of the sleeve 10 are inclined at an acute angle to the main axis. The outer end of the rod 9 carries a block 12 having a similarly inclined surface and the flanged periphery 4 of the support casing 1 is also similarly inclined and provided with a sealing gasket 19. The rod 9 passes through a bore 5 in the casing 1 and is threaded to receive a nut 14, tightening of which presses the edge of the sleeve 10 against the gasket 19. The block 12 may be extended to carry a lampholder 24 and, for single-ended lamps, the rod 9 carries a hook 6, the shank of which passes between anti-swivel lug 7 on the casing. The rod 9 may be hollow and serves for the passage of connecting wires to the lampholder 24. Reflectors may be mounted in slots at the top of the sleeve on either side of the channel.
Patent GB-113379-A (GB)
Title: Improvements in or connected with Lead Covered Cables.
IPC: H02G15/013
Filed: 1917-05-11
Abstract: 113,379. British Insulated & Helsby Cables, Ltd., and Blades, R. W. May 11, 1917. Couplings.-Lead covered electric cables are connected to joint or like boxes or fittings so as to enable the cable to move laterally and lengitudinally without fracture and still maintain a fluid-tight joint. In the construction shown in section in Fig. 1, a tubular extension 3 formed with a spherical enlargement is secured to the box or other fitting 1. Secured to the lead sheathing 2 of the cable is a tubular part 9 free to move longitudinally within a sleeve 7 having a spherical enlargement 4. Both spherical enlargements are enclosed in correspondingly shaped parts of a twopart casing 6 whereby lateral movements of the cable may take place without strain as indicated by the broken lines. A gland packed stuffing- box arrangement may be arranged in the sleeve 7. In a modified construction the sleeve 7 is connected to the part 3 by a flexible metal tube consisting of helical interlocking convolutions.
Patent GB-1417323-A (GB)
Title: Physiologically active xanthine compounds and compositions  containing them
IPC: A61K9/16
Filed: 1973-02-12
Abstract: 1417323 Medicines comprising xanthines HOECHST AG 12 Feb 1973 [15 Feb 1972 19 Feb 1972] 6731/73 Heading A5B [Also in Division C2] Theropeutic compositions for treating diseases involving insufficiency of cerebral blood flow comprise compounds of formula or a physiologically acceptable acid addition salt therof, wherein one of R 1  and R 2  is an unbranched hydroxyalkyl group having from 4 to 8 carbon atoms wherein the carbon atom bearing the hydroxyl group is separated from the nearest ring carbon atom by at least 3 carbon atoms and the other is methyl. The compositions may be administered orally, perentarally or rectally and may contain other active ingredients such as vitamins B 1  and B 2 .
Patent GB-727901-A (GB)
Title: Improvements in or relating to compression-ignition engines
Inventor: JENNER CHARLES LIDIARD
IPC: F02B19/14
Filed: 1952-03-14
Abstract: 727,901. Combustion chambers. ROLLSROYCE, Ltd. March 11, 1953 [March 14, 1952], No. 6741/52. Class 7(3). A pre-combustion chamber 14 is arranged outside the cylinder as viewed axially and is connected to the cylinder space by a throat 14a extending substantially parallel to the cylinder axis and by a duct 16 the centre line of which is substantially at right angles to the cylinder axis, which throat and duct are so arranged that no pronounced swirl in any definite direction is produced in the chamber 14, the combined volumes of the chamber and duct being more than 50 per cent of the total clearance volume. The duct 16 may be formed, as shown, entirely in the outer surface of the cylinder head, which latter may be inclined to the cylinder axis to provide a duct tapering in height towards the cylinder, or the duct may be formed in the cylinder block. A side valve 19, preferably an inlet valve, is arranged to open into the duct 16 opposite the throat 14a of the chamber 14. The centre lines of ducts 16a, 16b, Fig. 2, associated with adjacent cylinders 10a, 10b, may be inclined to one another.
Patent GB-1244402-A (GB)
Title: Nonwoven fabric formed predominantly of short length cellulose fibers
Inventor: MESEK FREDERICK K
IPC: D04H1/00
Filed: 1969-02-07
Abstract: 1,244,402. Non-woven fabric. JOHNSON & JOHNSON. 7 Feb., 1969 [9 Feb., 1968], No. 6741/69. Heading D1R. A bonded non-woven fabric of 80-95% of fibrous cellulosic material of which 5-20% consists of fibres longer than ¢" the remainder consists of fibrous material having a length shorter than ¢", and at least 15% wt. of the fibres shorter than ¢" consisting of wood flow. The fabric has a dry tensile strength of no less than 1.35 per inch width, a wet tensile strength of no less than 0.61 per inch width, a stiffness of no more than 7.0 cm for a web based on fibrous material of 3 ozs per sq. yard. The fibrous cellusic material may be wood pulp, cotton linters or staple rayon. The fabric can be made by applying wood flow to the surface of an air laid cellulosic fibre web, covering with a second cellulosic fibre web and feeding the composite web to another air-laying webforming apparatus. The binder can be a selfcuring acrylic latex applied as a solution or dispersion which is sucked into the web or is applied by a spray or mangle. The web can be heated to dry and cure the binder. The web can be compacted, embossed, be treated with a rewetting agent such as sulphonated alkyl ester, have spaced lines of binder applied to its surface or have a veneer of fibres bonded to its surface.
Patent GB-600574-A (GB)
Title: Improvements relating to fractional distillation
IPC: C10G7/02
Filed: 1945-03-17
Abstract: <PICT:0600574/III/1> The energy needed in close rectification, particularly for separating narrow petroleum cuts, is economized by employing a rectifying zone which is separate from, and operates at a higher pressure than, the stripping zone.  The vapours from the top of the rectifying zone are passed in out-of-contact heat exchange with the liquid at the base of the stripping zone, and the vapours leaving the top of the latter are compressed adiabatically into the base of the rectifying zone.  A proportion of the condensate from the condenser-reboiler may be returned to the rectifying zone as reflux, and the remainder cooled, for example by heat-exchange with the feed, and removed as product.  A preheated mixture containing iso- and n-pentanes is introduced through line 1 into the line carrying liquid from the base of rectifying column 6 to the top of stripping column 2, both of which have 25 plates. Overhead vapours leaving the top of the stripping column, which is maintained under a gauge pressure of 11 lbs./sq. in., are compressed by compressor 4 and fed through line 5 into the base of the rectifying column which operates at 30 lbs./sq. in.  Overhead isopentane vapours at 149 DEG  F. from the rectifying column are passed through line 7 into the condenser-reboiler 8 where they condense and give up latent heat to vaporize liquid n-pentane at 130 DEG  F. in the base of the stripping column.  The condensate from the condenser-reboiler is split into two streams, one being pumped through line 11 as reflux for the rectifying column, and the other being cooled in heat-exchanger 12 and taken to storage.  Liquid n-pentane is withdrawn from the base of the stripping column through line 15 and cooler 16.  The feed may be introduced at an intermediate position in the rectifying column. Auxiliary heat for starting operations may be applied by a steam jacket round the reboiler or the vapour return line.
Patent GB-704949-A (GB)
Title: A new or improved embossing press
Inventor: PILLING EDWARD
IPC: B30B1/04
Filed: 1950-03-20
Abstract: 704,949. Embossing presses. ENTWISTLE & WALKER, Ltd. June 4, 1951 [March 20, 1950], No. 6878/50. Class 100 (2) An embossing press comprises a stand or frame with an overhanging arm or head, a heated die located in the frame below the head, a ram slidable in the head towards and away from the die and a lever and link mechanism within the head and frame operated by a foot pedal for creating a heavy pressure between the ram and die. The frame comprises a box-like structure having walls 1, Fig. 1, in one or more of which are sliding doors la. At the top of the frame is a heavy table 10 provided with a strong overhanging head 11 having a removable side cover. Pivoted on a cross-pin 12 in the head is the operating lever 13 which passes through a slot in the ram 2 and is provided at its other end with a recess to receive a cross-pin 15 through which passes the threaded end of a link 16 having an adjusting nut 18 bearing on the pin 15. The lower end of the link is connected to a lever 7 carrying at its outer end a foot-pedal 6 accessible in a recess 5 in the front wall. A spring 20 counterbalances the lever 13 and springs 21 counterbalance the lever 7. As shown in Fig. 2, the lower surface of the slot in the ram 2 is curved to allow rolling contact with the lever 13. The lever is maintained in contact with this surface by a spring loaded ball 24. The stationary die 27 is heated electrically the temperature being regulated by thermostatic means. A pilot lamp 29 may be used to indicate when heating current is passing. To facilitate removal of the die 27 from a recess 25 in the table 10, the lower part of the ram is made detachable, having a groove to receive a rib 2b on the ram and a clamping grub screw 31. Adjustable guides 32 are provided for correctly locating the work to be embossed on the table. Spool holders 34, 36 are arranged to guide an embossing tape across the die the tape being advanced manually or automatically as the pedal is operated.
Patent GB-1474661-A (GB)
Title: Device for braking rolled stock
IPC: B21B43/00
Filed: 1975-02-18
Abstract: 1474661 Braking rolled stock MORGARDSHAMMER AB 18 Feb 1975 [19 Feb 1974] 6882/75 Heading B3M  Apparatus for braking rolled stock as it passes along an exit roller table 9 (Fig. 1, in plan) prior to being deposited on a cooling bed 10, includes brake plates 2 and brake flaps 1 located between adjacent rollers 3 of the table 9. Each plate 2 is movable upwardly (Fig. 2) from a position below the top of the rollers and cooperates with a flap 1 to brake a workpiece 8. Each flap is carried on the end of a pivoted arm 5 and is independently movable by a pistoncylinder unit 7. A counterweight 6 determines the resistance to pivoting of the arm 5 and hence regulates the braking force. The counterweight can be changed in weight, or the resistance can be adjusted pneumatically or by springs.
Patent GB-634018-A (GB)
Title: Improvements relating to soldering
IPC: B23K35/36
Filed: 1948-03-05
Abstract: In an improvement in or modification of the invention described and claimed in the parent Specification the soldering operations are carried out by means of a fluxcored solder in which the flux is a hydrazine hydrohalide alone in solid form or in mere admixture with a solid diluent or solid active constituent which may be any known flux spreading agent.
Patent GB-1113575-A (GB)
Title: Improvements relating to roofing or walling panels
Inventor: BRODERICK ALBERT HENRY THOMAS
IPC: B21D39/02
Filed: 1966-02-17
Abstract: 1,113,575. Roofing or walling. BRODERICK STRUCTURES Ltd. 22 March, 1967 [17 Feb., 1966], No. 6914/66. Heading E1W. [Also in Divisions B3 and B5] A method of seaming together the covering sheets B, of copper or other material, attached to roofing or walling panels A of fibreboard or other backing material comprises forming each sheet with a flange C having a lip F and clinching a capping, strip H over the lips, Fig. 4 (not shown). The flanging operation is facilitated by a timber framework (D, E), Fig. 1 (not shown), and the panels may be located by cleats (G), Fig. 2 (not shown), extending between the panels and flanged over at the projecting end.